Double throat for punching and shearing machines



(No Model.) 2 Sheets-Sheet 1. I

G. E. MOBETH.

DOUBLE THROAT FOR PUNOHING AND SHEARING MACHINES.

' No. 310,602. Patented Jan. 1-3. 1885.

M awfbwk W Attorney 2 Sheets-Sheet 2.

(No Model.)

O. E. MGBETH. DOUBLE THROAT FOR PUNGHING AND SHEARING MACHINES. No.310,602.

Patented Jan. 13, 1885.

Witnesses Inventor Attorney I lJTTnn STATns PATENT Trice.

CHARLES E. MOBETH, OF HAMILTON, OHIO.

DOUBLE THROAT FOR PUNCHING AND SHEARlNG MACHINES.

SPECIFICATION forming part of Letters Patent No. 310,602, dated January13:, 1885.

Application filed June 21, 1884.

To all whom it may concern:

Be it known that I, CHARLES E. McBETH, of Hamilton, Butler county, Ohio,have invented a certain new and useful Improvement in Punching andShearing Machines, of which the following is a specification.

This invention pertains to punching and shearing machines; and itrelates particularly to the throat for permitting the passage of Workbetween the plunger and the die.

The invention will be readily understood from the following description,taken in connection with the accompanying drawings, in Which- Figure 1is a front view-of a punching and shearing machine embodying myimprovement; Fig. 2, a side view of the same; Fig. 3, a horizontalsection of the same; Fig. 4, a plan of the same; Fig. 5, a face view ofa bar of material, illustrating the peculiar capacity of machinesconstructed in accordance with my improvement, and Fig. 6 a perspectiveView of a machine embodying my improvement.

In vertical punching and shearing machines there is a throatway to therear of the punch and die, for permitting the passage of material to beoperated upon, the throat permitting the longitudinal passage ofmaterial in one direction past the punch or shear.

In Fig. 5 is represented a bar of iron on which has been performedvarious operations of punching and shearing. Such a bar may be passedthrough the throat of an ordinary punching-machine, and if a gang ofpunches be arranged in the machine in one direction,

the series of groups of holes M may be punched, the bar being fedlengthwise in a direction transverse to the line of the group ofpunches. If it be desired that a series of holes shall lie parallel withthe bar, as at N. it becomes necessary that the punches shall be placedin the machine in a position at right angles to the position previouslyindicated.

There has never been previously contrived, Within my knowledge, amachine by which the two characters of punchings indicated can beexecuted without an entire resetting of the punches, and, furthermore,very few inachines are adapted to permit of the cross punching of anextended series of holes. In

a similar manner shearing-blades may be set in a machine so as tocrosscut a bar, as at 0; but an entirely new setting of theshearingblades is required in case we wish to slit the bar, as at 1?.

(No model.)

My improvement in the throat of punching and shearing machines permitsthe passage of a bar in a direction either parallel with or transverseto the shear-blades, or a gang of punching-tools, or other tools,whereby when the machine is fitted with shear-blades a bar may be eithercrosscut or slitted, and whereby, if the machine be fitted with a gangof punches, the bar may have a line of punohings across its body oralong its length, as indicated in Fig. 5. This I accomplish by means ofa double throat.

In the drawings, A represents the body of a punching and shearingmachine; B, the usual ram-guide; O, the ram; D, the die'bed; E, theopening in the die-bed for the passage of punchings; F, the foot portionof the bed; G, a throat in the bed, permitting the pas sage between theram and die-bed of long bars in a direction transverse to the face ofthe ram; and H, a throat at right angles to the throat G, permitting thepassage of long bars between the ram and die-bed in a direction parallelwith the face of the ram. A double throat is thus formed, whereby barsmay be longitudinally passed in either direction.

The body of the machine may be arranged angularly with reference to theram, as indicated in the drawings; or it may be squarely arranged, aswill be readily understood from the plan-lines Q in Fig. 3.

\Vith the construction of the cuttingtools and with the arrangement ofmechanism for actuating the ram my present invention has nothing to do.The ram may be driven by a cam-shaft journaled in the bearing 1, locatedat an angle with reference to the ram; or the hearing may be locatedsquarely with reference to the ram, as indicated by the dotted lines KinFig. 4; or the ram may be operated through the medium of a lever from acamshaft journaled in the bearings J. All these plans for actuating theram are old.

Having thus described a machine embodying my improvement, the part Idesire particularly to point out and distinctly claim as of my inventionis- The double throat G H, substantially as and for the purpose setforth.

CHARLES E. MOBETH.

Witnesses:

W. A. SnwARn, J. W.

ICO

